An analog signal's characteristic quantity representing data may(66). at any instant, any value within a continuous(67). For example, an analog signal may follow continuously the values of another physical quantity representing data.A discrete signal is composed of(68) elements in time, each element having one or more characteristic quantities which can represent data. Examples of characteristic quantities are amplitude, waveform,(69), and position in time. A digital signal is a special case of discrete signals, in which data are represented by a(70) number of well-defined discrete values that one of its characteristic quantities may take in time.
A.acquire
B.collect
C.assume
D.fetch
第4题
关于遗忘综合征,下列哪种说法正确
A.一种选择性或局灶性认知功能障碍
B.一种广泛性认知功能障碍
C.一种半侧脑认知功能障碍
D.一种因深部加表部脑受损而出现的认知功能障碍
E.一种严重的思维障碍
第5题
关于遗忘综合征,下列哪种说法正确
A.一种选择性或局灶性认知功能障碍
B.一种广泛性认知功能障碍
C.一种半侧脑认知功能障碍
D.一种因深部加表部脑受损而出现的认知功能障碍
E.一种严重的思维障碍
第6题
关于遗忘综合征,下列哪种说法正确
A.一种选择性或局灶性认知功能障碍
B.一种广泛性认知功能障碍
C.一种半侧脑认知功能障碍
D.一种因深部加表部脑受损而出现的认知功能障碍
E.一种严重的思维障碍
第7题
关于遗忘综合征,下列哪种说法正确
A.一种选择性或局灶性认知功能障碍
B.一种广泛性认知功能障碍
C.一种半侧脑认知功能障碍
D.一种因深部加浅部脑受损而出现的认知功能障碍
E.一种严重的思维障碍
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